Optical switch and matrix optical switch
First Claim
1. An optical switch comprising:
- a substrate which has at least conductivity;
an optical waveguide layer which is formed on the substrate, the optical waveguide layer including an incident-side channel waveguide on which a light signal is incident and a plurality of outgoing-side channel waveguides branching from the incident-side channel waveguide; and
a control electrode which is formed on the optical waveguide layer, the control electrode forming, near a crossover portion of the plurality of outgoing-side channel waveguides, a reflection plane which reflects the incident light signal by applying with the substrate a voltage to the optical waveguide layer to control the refractive index of the optical waveguide layer, and the control electrode switching propagation paths of the light signal.
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Accused Products
Abstract
The invention provides an optical switch including a substrate which has conductivity or semiconductivity, an optical waveguide layer which is formed on the substrate, and a control electrode which is formed on the optical waveguide layer. The optical waveguide layer includes an incident-side channel waveguide to which a light signal is incident and plural outgoing-side channel waveguides branched from the incident-side channel waveguide. The control electrode forms a reflection plane reflecting the incident light signal near a crossover portion of the plural outgoing-side channel waveguides by applying voltage to the optical waveguide layer with the substrate to control a refractive index of the optical waveguide layer, and switches propagation paths of the light signal.
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Citations
36 Claims
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1. An optical switch comprising:
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a substrate which has at least conductivity;
an optical waveguide layer which is formed on the substrate, the optical waveguide layer including an incident-side channel waveguide on which a light signal is incident and a plurality of outgoing-side channel waveguides branching from the incident-side channel waveguide; and
a control electrode which is formed on the optical waveguide layer, the control electrode forming, near a crossover portion of the plurality of outgoing-side channel waveguides, a reflection plane which reflects the incident light signal by applying with the substrate a voltage to the optical waveguide layer to control the refractive index of the optical waveguide layer, and the control electrode switching propagation paths of the light signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. An optical switch comprising:
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a substrate which has at least conductivity;
an optical waveguide layer which is formed on the substrate, the optical waveguide layer including an incident-side channel waveguide on which a light signal is incident and a plurality of outgoing-side channel waveguides branching from the incident-side channel waveguide, the optical waveguide layer having a grooved portion formed between adjacent outgoing-side channel waveguides; and
a control electrode which is formed on the optical waveguide layer, the control electrode forming, near a crossover portion of the plurality of outgoing-side channel waveguides, a reflection plane which reflects the incident light signal by applying a voltage with the substrate to the optical waveguide layer to control the refractive index of the optical waveguide layer, the reflection plane being contiguous to an interface between the optical waveguide layer and the grooved portion, and the control electrode switching propagation paths of the light signal.
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33. A matrix optical switch comprising:
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a substrate which has at least conductivity; and
a plurality of optical switch units which are arranged in a matrix on the substrate, wherein each of the plurality of optical switch units includes an optical waveguide layer which is formed on the substrate, the optical waveguide layer including an incident-side channel waveguide on which a light signal is incident and a plurality of outgoing-side channel waveguides branching from the incident-side channel waveguide, and a control electrode which is formed on the optical waveguide layer, the control electrode forming, near a crossover portion of the plurality of outgoing-side channel waveguides, a reflection plane which reflects the incident light signal by applying a voltage with the substrate to the optical waveguide layer to control the refractive index of the optical waveguide layer, and the control electrode switching propagation paths of the light signal. - View Dependent Claims (34)
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35. A matrix optical switch comprising:
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a substrate which has at least conductivity; and
a plurality of optical switch units which are arranged in a matrix on the substrate, wherein each of the plurality of optical switch units includes an optical waveguide layer which is formed on the substrate, the optical waveguide layer including an incident-side channel waveguide on which a light signal is incident and a plurality of outgoing-side channel waveguides branching from the incident-side channel waveguide, the optical waveguide layer having a grooved portion formed between adjacent outgoing-side channel waveguides, and a control electrode which is formed on the optical waveguide layer, the control electrode forming, near a crossover portion of the plurality of outgoing-side channel waveguides, a reflection plane reflecting the incident light signal by applying with the substrate a voltage to the optical waveguide layer to control the refractive index of the optical waveguide layer, the reflection plane being contiguous to an interface between the optical waveguide layer and the grooved portion, and the control electrode switching propagation paths of the light signal. - View Dependent Claims (36)
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Specification